US 8,894,248 B2Granted

Stage lighting fixture

AssigneeClay Paky S.p.A.

InventorsPasquale Quadri, Angelo Cavenati

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Abstract

A stage lighting fixture includes a casing; a light source, which is housed inside the casing and is adapted-to emit a light beam along an optical axis; a reflector coupled to the light source; light beam processing means housed inside the casing and adapted to selectively intercept the light beam; at least one heat-shield assembly located inside the casing, between the light source and the light beam processing means, to substantially divide the casing into a first area comprising the light source and the reflector, and a second area comprising the light beam processing means; the heat-shield assembly comprising a heat-shield filter, and a detector for detecting a parameter indicative of the temperature of the heat-shield filter; a cooling assembly for cooling the inside of the casing; a control device configured for regulating the cooling assembly on the basis of the parameter detected by the detector.

Claims11

Dependent claims

A stage lighting fixture comprising:

a casing (2);
a light source (3) which is housed inside the casing (2) at a first end (11) of the casing (2) and is adapted to emit a light beam along an optical axis (B);
a reflector (4) coupled to the light source (3);
light beam processing means (7) housed inside the casing (2) and adapted to selectively intercept the light beam;
at least one heat-shield assembly (8) located inside the casing (2), between the light source (3) and the light beam processing means (7), to substantially divide the casing (2) into a first area (36a) comprising the light source (3) and the reflector (4), and a second area (36b) comprising the light beam processing means (7);
the heat-shield assembly (8) comprising a heat-shield filter (31), and a detector (37) for detecting a parameter indicative of the temperature of the heat-shield filter (31);
a cooling assembly (9) for cooling the inside of the casing (2);
a control device (10) configured for regulating the cooling assembly (9) on the basis of the parameter detected by the detector (37).

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/767,523Filed 14 Feb 2013
Priority: IT MI2012A023116 Feb 2012
Published: US 2013/0223078 A129 Aug 2013
Granted: 25 Nov 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F21V 9/04
Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters: for filtering out infrared radiation
F21V 7/24
Characterised by materials, surface treatments or coatings, e.g. dichroic reflectors: characterised by the material
F21V 7/28
Characterised by materials, surface treatments or coatings, e.g. dichroic reflectors: characterised by coatings
F21V 29/15
Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems: thermal insulation